在微晶萘上吸附吗啉-4-碳二硫代酸碲后用分光光度法测定碲

Spectrophotometric determination of tellurium after adsorption of its morpholine-4-carbodithioate on microcrystalline naphthalene.

作者信息

Sethi C L, Kumar A, Satake M, Puri B K

机构信息

Department of Chemistry, Indian Institute of Technology, New Delhi 110016, India.

出版信息

Talanta. 1984 Oct;31(10 Pt 1):848-50. doi: 10.1016/0039-9140(84)80210-6.

DOI:10.1016/0039-9140(84)80210-6

PMID:18963758

Abstract

A rapid spectrophotometric method has been developed for microdetermination of Te(IV) after co-precipitation of its morpholine-4-carbodithioate complex on microcrystalline naphthalene and subsequent dissolution in chloroform. The molar absorptivity at 415 nm is 9.18 x 10(3) l.mole(-1).cm(-1). Beer's law is obeyed over the range 5-75 mug of Te(IV); 25.0 mug of Te(IV) in 10.0 ml of final solution gives a mean absorbance of 0.180 with a relative standard deviation of 0.55%. The method has been tested for determination of tellurium in some alloys and synthetic mixtures.

摘要

已开发出一种快速分光光度法，用于在微晶萘上共沉淀碲（IV）的吗啉-4-碳二硫代酸酯络合物并随后溶解于氯仿后对碲（IV）进行微量测定。在415nm处的摩尔吸光系数为9.18×10(3) l·mol(-1)·cm(-1)。在5-75μg的碲（IV）范围内符合比尔定律；在10.0ml最终溶液中25.0μg的碲（IV）给出的平均吸光度为0.180，相对标准偏差为0.55%。该方法已用于测定某些合金和合成混合物中的碲。